Water quality
Monitoring of the Ostreopsis micro-algae: samples, history and reports.
Concentration trends
Logarithmic scale. Zero values and "below detection threshold" values cannot be plotted on this scale (see the full table below). Dark red dots indicate a beach closure.
Approved testimonials
15- 🚶 Walk along the seashore (Less than 30 min) on 15/08/2026 · symptoms on 15/08/2026🔴 Severe🤮 Digestive problems (gastro)🩹 Skin irritation👃 Throat / nose irritation
- 🏊 Swimming (30 min to 1 h) on 15/08/2026 · no symptoms
- 🏊 Swimming (1 h to 3 h) on 12/08/2026 · symptoms on 12/08/2026🔴 Severe🤢 Nausea
- 🌊 Open-water swimming (More than 3 h) on 06/08/2026 · symptoms on 07/08/2026🟠 Moderate💫 Dizziness😷 Cough
- 🏊 Swimming (1 h to 3 h) on 05/08/2026 · symptoms on 07/08/2026🟢 Mild🤢 Nausea👁️ Irritated eyes
- 🌊 Open-water swimming (30 min to 1 h) on 04/08/2026 · symptoms on 05/08/2026🟠 Moderate💫 Dizziness😷 Cough👁️ Irritated eyes
- 🏄 Surfing (Less than 30 min) on 02/08/2026 · symptoms on 04/08/2026🟠 Moderate🩹 Skin irritation🤢 Nausea💪 Muscle aches
- 🏊 Swimming (More than 3 h) on 03/08/2026 · no symptoms
- 🏊 Swimming (1 h to 3 h) on 02/08/2026 · no symptoms
- 🤿 Diving (1 h to 3 h) on 31/07/2026 · symptoms on 02/08/2026🟠 Moderate👃 Throat / nose irritation💪 Muscle aches👁️ Irritated eyes
- 🏊 Swimming (30 min to 1 h) on 01/08/2026 · symptoms on 02/08/2026🔴 Severe🌡️ Fever / chills👁️ Irritated eyes
- 🌊 Open-water swimming (More than 3 h) on 29/07/2026 · symptoms on 30/07/2026🔴 Severe💪 Muscle aches💫 Dizziness
- 🏊 Swimming (30 min to 1 h) on 15/07/2026 · no symptoms
- 🏊 Swimming (30 min to 1 h) on 13/07/2026 · symptoms on 13/07/2026🟠 Moderate🤕 Headache👃 Throat / nose irritation❓ Other
- 🏊 Swimming (30 min to 1 h) on 10/07/2026 · no symptoms
Testimonials are anonymous and shown after moderation. Correlation does not imply causation.
Full sampling history
| Sample | Result | Cells/L | siamensis | ovata | Temp. | Status |
|---|---|---|---|---|---|---|
| 28/09/2026 | 29/09/2026 | 500 | 6% | 94% | 22.2°C | Low |
| 27/08/2026 | 31/08/2026 | 0 | — | 100% | — | Undetectable |
| 30/07/2026 | 03/08/2026 | 0 | 33% | 67% | 24.5°C | Undetectable |
| 18/05/2026 | 20/05/2026 | 0 | — | — | 19.9°C | Undetectable |
| 20/04/2026 | 22/04/2026 | 0 | — | — | 20°C | Undetectable |
| 18/03/2026 | 20/03/2026 | 0 | — | — | 14.1°C | Undetectable |
| 18/02/2026 | 20/02/2026 | 0 | — | — | 12.9°C | Undetectable |
| 20/01/2026 | 22/01/2026 | 0 | — | — | 13.2°C | Undetectable |
The beach
Tides, daylight and practical information — unrelated to water quality.
Practical information
440 m of beach
Nearby
🅿️ Car park🚻 Toilets🍽️ Food and drink
View this beach on OpenStreetMap — General information © OpenStreetMap contributors (ODbL)
Data sources
- Official samples: Communauté d'Agglomération Pays Basque (CAPB) — the only ones used for status and closures.
- Tides: Open-Meteo forecasts (indicative).
- General beach information: OpenStreetMap contributors (ODbL) — may be incomplete or out of date.